Spray-coating device for a coating liquid

摘要

A spraycoating device includes at least one coating liquid spray gun ( 2 ) which contains a measuring valve device ( 40 ) opening or closing a compressed gas measuring valve flow path ( 42 ) depending on the positions of a liquid feed valve ( 4 ). The measurement of the compressed gas flow allows automatically determining whether the liquid feed valve ( 4 ) is situated in a fully close or a fully open position or in an arbitrary intermediate position thereto.